Negative linear compressibility of generic rotating rigid triangles
Zhou Xiao-Qin †, Zhang Lei, Yang Lu
       

(color online) Plots of off-axis linear compressibility for system illustrated in Fig. 2 where and z = 1 mm. The other parameters (including a 1, b 1, c 1, a 2, b 2, and c 2) are in units of mm.